High performance Delrin bushings bridge the gap between metals and ordinary plastics with a unique combination of strength, stiffness, hardness, dimensional stability, toughness, fatigue resistance, solvent and fuel resistance, abrasion resistance, low wear and low friction. Delrin is a plastic compound that is harder and more durable than urethane yet more forgiving than bronze or steel metal bushings. Delrin is the best of both worlds. Sold each.